Hunters in the Snow' by Pieter Bruegel the Elder, February 1565 COLLECTOR / PRINT COLLECTOR/GETTY IMAGES

Do you feel like a different person during the winter? In this two-part Stuff to Blow Your Mind exploration, Robert Lamb and Joe McCormick examine the extent to which winter affects human health and culture. From the winter transformations of the Kwakwa̱ka̱ʼwakw people to the latest studies on seasonal genetic changes, prepare to contemplate the icy dark. (Originally published Dec. 26, 2017)